First of all, this is not called a weight-loss drug. Acai berry is classified as food supplements. It is just a supplement in itself and cannot be called a weight-loss drug.
The second explanation is very clear. A balanced diet and a healthy lifestyle are the main ways to lose weight. Acai berry is only an auxiliary.
Third, acai berry is mainly taken with meals, that is, taken with meals, with water, soup, or rice. You can eat it as long as you can swallow it